CN1629483A - Check valve and pump including the same - Google Patents

Check valve and pump including the same Download PDF

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Publication number
CN1629483A
CN1629483A CNA2004101021995A CN200410102199A CN1629483A CN 1629483 A CN1629483 A CN 1629483A CN A2004101021995 A CNA2004101021995 A CN A2004101021995A CN 200410102199 A CN200410102199 A CN 200410102199A CN 1629483 A CN1629483 A CN 1629483A
Authority
CN
China
Prior art keywords
valve body
partition wall
sealed department
safety check
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2004101021995A
Other languages
Chinese (zh)
Other versions
CN100357603C (en
Inventor
大西人司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of CN1629483A publication Critical patent/CN1629483A/en
Application granted granted Critical
Publication of CN100357603C publication Critical patent/CN100357603C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • F04B53/1047—Flap valves the valve being formed by one or more flexible elements
    • F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
    • F04B53/1065—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at its centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • F04B43/046—Micropumps with piezoelectric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/789—Central mount

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

A check valve includes a valve component composed of an elastic material and having a flat circular seal and a shaft extending from the center of the seal; and a partition having a valve-supporting hole sustaining the valve component, a thin circular portion centered at the valve-supporting hole and having a diameter smaller than the seal, and vents through the thin circular portion. The shaft of the valve component is sustained by the valve-supporting hole in the partition, and the seal is deformed toward the partition such that the bottom surface of the seal is in line contact with a circular edge that is defined by the level difference between the partition and the thin circular portion at least in a state where the valve component does not receive fluid pressure.

Description

Safety check and pump with this safety check
Technical field
The present invention relates to a kind of safety check that has good sealing property, can realize miniaturization, slimming.
Background technique
As small-sized safety check, the umbrella (ア Application Block レ ラ) with the umbrella handle axial region partly at the main body of umbrella and the center that is equivalent to this umbrella main body is well-known.This umbrella obtains the effect of safety check with this in the one side (sealing surface) of the table of the partition wall with intercommunicating pore back of the body, be provided with its umbrella body and its axial region is supported on partition wall, makes umbrella main body elasticity be connected sealing surface with surrounding this intercommunicating pore.That is, make the resiliently deformable of hydrodynamic pressure, on the other hand, hydrodynamic pressure is then stoped from the flowing of direction of umbrella main body outside effect from the mobile permission umbrella main body of the direction of the inboard effect of umbrella main body by intercommunicating pore.
But, when the flatness of the sealing surface of this umbrella is incomplete, can not can't obtain enough sealabilities with uniform pressure contact at the back side of umbrella main body according to present inventor's parsing.If the further miniaturization of this umbrella, then this problem is just more remarkable.
And umbrella is used as slim machine, for example the piezoelectricity pump check valve.Because piezoelectric pump is used to the water-cooled notebook computer, therefore require ultrathin type, then umbrella is also pursued further slimming.
Open the flat 9-250461 of communique number of [patent documentation 1] Japan Patent
Open the flat 9-329271 of communique number of [patent documentation 2] Japan Patent
Open communique 2000-274374 number of [patent documentation 3] Japan Patent
Open communique 2003-90447 number of [patent documentation 4] Japan Patent
Summary of the invention
The objective of the invention is to, the safety check of the umbellate form that a kind of valve body is made of single elastic member is provided, that is, obtain sufficient sealing easily and can realize the safety check of miniaturization and slimming.
Safety check of the present invention has: valve body, this valve body are to be made of the sealed department with planar rondure and the elastic material of axial region that is positioned at the center of sealing portion; And partition wall, this partition wall has: the valve body supported hole, with this valve body supported hole planar rondure that is the center, diameter is than the little circular thin-walled end difference of above-mentioned sealed department and be positioned at the fluid circulating hole of this circle thin-walled end difference; It is characterized in that, the above-mentioned axial region of valve body is supported by the valve body supported hole of partition wall, make sealing portion in partition wall one side generation resiliently deformable, so that the hydrodynamic pressure upper and lower sealed department back side of stating of state that do not affact this valve body contacts with the planar rondure edge line of the planar rondure end difference of partition wall at least.
The sealed department of valve body forms plane, and the axial region periphery at its back side contacts with circular thin-walled end difference.That is to say, can on the contacting part of the circular edge of the periphery at its back side, form the ring-type conical surface that thickness reduces to outer rim.
Because the sealed department back side of valve body contacts with the planar rondure thin-walled end difference line of partition wall, therefore safety check of the present invention can be realized not needing the high flatness of sealed department and obtain good sealing property.
Description of drawings
Fig. 1 is that expression has the sectional arrangement drawing according to an example of the piezoelectric pump of safety check of the present invention.
Fig. 2 is the sectional arrangement drawing according to the free state of the valve body monomer of safety check of the present invention.
Fig. 3 is the sectional arrangement drawing that closes the valve state that the valve body of Fig. 2 is installed to the state of partition wall.
Fig. 4 is the same sectional arrangement drawing of opening the valve state.
Fig. 5 is the cut-away section stereogram according to safety check of the present invention.
Fig. 6 is the sectional arrangement drawing of expression according to another embodiment of safety check of the present invention.
Embodiment
Fig. 1 represents safety check of the present invention is applicable to the embodiment of piezoelectricity pump check valve.Cover body 10 is made up of upper outlet body 10a and lower cover 10b, and piezoelectric vibrator 11 liquid sealing ground clampings are supported between upper outlet body 10a and the lower cover 10b.The thickness of piezoelectric vibrator 11 is illustrated turgidly, but actual (real) thickness is less than 1.5mm.Between upper outlet body 10a and this piezoelectric vibrator 11, be formed with the recess 13 that is used to form variable volume chambers 12.
The inlet channel 14A and the outlet passage 14B of cooling water (liquid) are in open state at upper outlet body 10a, and inlet channel 14A stays chamber 15A to be communicated with inlet side liquid, and outlet passage 14B stays chamber 15B to be communicated with outlet side liquid.Partition wall 16A, 16B lay respectively at inlet side liquid and stay between chamber 15A and the variable volume chambers 12 and outlet side liquid stays between chamber 15B and the variable volume chambers 12, and safety check 17A, 17B are located on this two partition wall 16A, the 16B.Safety check 17A allows to flow, do not allow its rightabout fluid stream to the fluid of variable volume chambers 12 from inlet channel 14A (inlet side liquid stays chamber 15A), and safety check 17B allows to flow, do not allow its rightabout fluid stream to the fluid of outlet passage 14B (outlet side liquid stays chamber 15B) from variable volume chambers 12.
When the piezoelectric vibrator 11 positive dielasticities of above piezoelectric pump are out of shape, in the stroke that variable volume chambers 12 volumes enlarge, safety check 17A opens and safety check 17B closes, so liquid flow in the variable volume chambers 12 from cooling water inlet passage 14A (inlet side liquid stays chamber 15A); In the stroke that variable volume chambers 12 volumes dwindle, safety check 17B opens and safety check 17A closes, so liquid flow into outlet passage 14B (outlet side liquid stays chamber 15B) from variable volume chambers 12.Therefore, by making piezoelectric vibrator 11 continuously positive dielasticity distortion (vibration) obtain pumping action.Such piezoelectric vibrator 11 is well-known.
The structure of safety check 17A and 17B is identical, all constitutes by valve body 17 and partition wall 16.Below with reference to Fig. 2～Fig. 6 this valve body 17 and partition wall 16 are described.
The valve body 17 of expression monomer shape is that the center becomes the rotation symmetric shape with axle 17X among Fig. 2.This valve body 17 is made of the integrally formed product of elastic material, has planar rondure, flat sealed department 171, is formed with at the center, the back side of sealing portion 171 and sealed department 171 quadratures and the axial region 172 that extends.The back side 173 of the sealed department 171 of this valve body 17 becomes the plane with free state as far as possible.The front end of axial region 172 is formed with anticreep projection 174.
Partition wall 16 forms plane as a whole, have the plat part (heavy section) 161 relative, be formed at the central circular thin-walled end difference 162 of this plat part 161, form circular edge 163 planar rondure, that become the section right angle by plat part 161 and circular thin-walled end difference 162 with the outer periphery, the back side of the sealed department 171 of valve body 17.
Central part at circular thin-walled end difference 162 is formed with valve body supported hole 164, is formed with a plurality of fluid circulating holes 165 in eccentric part.This fluid circulating hole 165 stays chamber 15A (outlet side liquid stays chamber 15B) to be connected with variable volume chambers 12 and the inlet side liquid of Fig. 1.The axial region 172 of valve body 17 is inserted into the valve body supported hole 164 of partition wall 16, and this anticreep projection 174 is given prominence to and anticreep from this supported hole 164.
At this anticreep state, sealed department 171 is not applied under the free state of hydrodynamic pressure at least, the back side of sealed department 171 periphery contacts with circular edge 163 lines.That is, become the back side of plane sealed department 171, resiliently deformable takes place contiguously at the periphery and the circular thin-walled end difference 162 of axial region 172, its result, the back side periphery of sealed department 171 does not contact with 161 of plat parts and contacts with circular edge 163 lines.Locate the anticreep projection 174 (length of valve body supported hole 164) of axial region 173 in order to produce such resiliently deformable at sealed department 171.In addition, clearly, specification said " line contact " is not meant the contact of geometric line, and refers to it mainly is that the back side of sealed department 171 contacts with circular edge 163 (with the highest contact pressure) and obtains seal action.
Under the high state of the pressure of the surface side of the sealed department 171 of valve body 17, sealed department 171 is pushed circular edge 163 with higher contact pressure, thereby pass closed channel (Fig. 3), and under the high state of the pressure of the quilt cover side of sealed department 171, sealed department 171 leaves circular edge 163, thereby open stream (Fig. 4), this safety check of said structure obtains the effect of safety check thus.And owing to closing under the valve state, the sealed department 171 of valve body 17 contacts with circular edge 163 lines of partition wall 16, thereby, to compare with the existing umbrella that contacts with 161 of plat parts, sealed department 171 can obtain good sealing effect.The flatness of plat part 161 does not impact sealing.And the stream when comparing out valve with umbrella is smooth, can reduce flow path resistance.And then, become the existing umbrella of umbrella to compare with valve body, can realize slimming.
Fig. 6 represents another embodiment of the present invention.In this embodiment, thickness is formed on the back side periphery of the flat sealed department 171 of one-tenth of valve body 17 to the ring-type conical surface 175 that outer rim reduces, so that contact with circular edge 163 reliable ground wires.

Claims (4)

1, a kind of safety check has:
Valve body, this valve body are to be made of the sealed department with planar rondure and the elastic material of axial region that is positioned at the center of sealing portion, and
Partition wall, this partition wall has: the valve body supported hole, with this valve body supported hole planar rondure that is the center, diameter is than the little circular thin-walled end difference of above-mentioned sealed department and be positioned at the fluid circulating hole of this circle thin-walled end difference; It is characterized in that,
The above-mentioned axial region of valve body is supported by the above-mentioned valve body supported hole of partition wall, make sealing portion to partition wall one side generation resiliently deformable, so that contact with the circular edge line of the planar rondure end difference of partition wall at the upper and lower sealed department back side of stating of state that hydrodynamic pressure does not at least affact this valve body.
2, safety check as claimed in claim 1 is characterized in that,
The sealed department of valve body becomes plane, and the axial region periphery at its back side contacts with circular thin-walled end difference.
3, safety check as claimed in claim 1 is characterized in that,
The sealed department of valve body becomes plane, and the periphery at its back side is formed with the ring-type conical surface that thickness reduces towards outer rim.
4, a kind of pump is characterized in that, has the described safety check of claim 1.
CNB2004101021995A 2003-12-15 2004-12-15 Check valve and pump including the same Expired - Fee Related CN100357603C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP416949/2003 2003-12-15
JP2003416949A JP2005172206A (en) 2003-12-15 2003-12-15 Check valve

Publications (2)

Publication Number Publication Date
CN1629483A true CN1629483A (en) 2005-06-22
CN100357603C CN100357603C (en) 2007-12-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004101021995A Expired - Fee Related CN100357603C (en) 2003-12-15 2004-12-15 Check valve and pump including the same

Country Status (5)

Country Link
US (1) US20050126649A1 (en)
EP (1) EP1553297B1 (en)
JP (1) JP2005172206A (en)
CN (1) CN100357603C (en)
DE (1) DE602004008569T2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100338361C (en) * 2005-08-12 2007-09-19 北京工业大学 Valveless piezoelectric pump
WO2010078778A1 (en) * 2009-01-09 2010-07-15 林大伟 Upright self-sucking piezoceramics pump
CN105351572A (en) * 2014-08-07 2016-02-24 日本骏马株式会社 Check valve
CN105443340A (en) * 2015-12-25 2016-03-30 北京东方园林生态股份有限公司 Portable water pumping device capable of adjusting probing depth
CN108291659A (en) * 2015-11-19 2018-07-17 株式会社荏原制作所 It is pumped in water
CN112177902A (en) * 2020-09-29 2021-01-05 长春工业大学 Vane type bluff body piezoelectric pump
CN114558199A (en) * 2020-11-27 2022-05-31 厄比电子医学有限责任公司 Pump unit for medical purposes
CN115126685A (en) * 2021-03-24 2022-09-30 研能科技股份有限公司 Thin gas transmission device

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JP2008180171A (en) * 2007-01-25 2008-08-07 Sharp Corp Micro pump
CN101634292B (en) * 2009-08-10 2011-04-13 胡军 Piezoelectric ceramic pump used for electronic product and CPU cooling system
DE102013003739A1 (en) * 2013-03-05 2014-09-11 Daimler Ag Device for covering a pipe end
CN104009728B (en) * 2014-06-16 2015-08-05 吉林大学 A kind of piezoelectric vibrator with break valve
US9970429B2 (en) * 2014-07-16 2018-05-15 Flowserve Management Company Diaphragm pump
US10082138B2 (en) * 2014-08-25 2018-09-25 Flowserve Management Company Valve and valve seat for a diaphragm pump
US10751651B2 (en) 2014-09-02 2020-08-25 Cummins Filtration Ip, Inc. No filter no run fluid filtration system
US9618131B2 (en) * 2015-07-08 2017-04-11 William Lee One way valve
JP6544114B2 (en) 2015-07-27 2019-07-17 浜名湖電装株式会社 Check valve device and evaporated fuel supply system
DK3534002T3 (en) * 2016-10-27 2021-04-06 Nitto Kohki Co LIQUID PUMP
GB2605139B (en) * 2021-03-22 2024-03-27 Md Diagnostics Ltd Valve Housing

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100338361C (en) * 2005-08-12 2007-09-19 北京工业大学 Valveless piezoelectric pump
WO2010078778A1 (en) * 2009-01-09 2010-07-15 林大伟 Upright self-sucking piezoceramics pump
CN105351572A (en) * 2014-08-07 2016-02-24 日本骏马株式会社 Check valve
CN105351572B (en) * 2014-08-07 2019-04-02 日本骏马株式会社 Check-valves
CN108291659A (en) * 2015-11-19 2018-07-17 株式会社荏原制作所 It is pumped in water
CN108291659B (en) * 2015-11-19 2019-10-29 株式会社荏原制作所 It is pumped in water
TWI689673B (en) * 2015-11-19 2020-04-01 日商荏原製作所股份有限公司 Water pump
CN105443340A (en) * 2015-12-25 2016-03-30 北京东方园林生态股份有限公司 Portable water pumping device capable of adjusting probing depth
CN112177902A (en) * 2020-09-29 2021-01-05 长春工业大学 Vane type bluff body piezoelectric pump
CN114558199A (en) * 2020-11-27 2022-05-31 厄比电子医学有限责任公司 Pump unit for medical purposes
CN115126685A (en) * 2021-03-24 2022-09-30 研能科技股份有限公司 Thin gas transmission device

Also Published As

Publication number Publication date
EP1553297A2 (en) 2005-07-13
EP1553297B1 (en) 2007-08-29
DE602004008569D1 (en) 2007-10-11
JP2005172206A (en) 2005-06-30
US20050126649A1 (en) 2005-06-16
EP1553297A3 (en) 2006-03-08
DE602004008569T2 (en) 2008-05-21
CN100357603C (en) 2007-12-26

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Granted publication date: 20071226

Termination date: 20100115